Dogs see very well in the dark. Their eyes are adapted to perform better in low light than human eyes are, allowing them to see well in daylight and at night.
Dogs' eyes have adaptations that allow them to see very well in areas of low light. Large pupils, more rods in their retinas and a large tapetum, the structure that reflects light, give them a keen sense of night vision. The large tapetum is also what makes dogs' eyes appear to glow at night, as it reflects light and allows the retina to register light a second time after it has entered the eye.